diff --git a/src/cli/download_tracker.rs b/src/cli/download_tracker.rs
index 0c5023fc2f6..1bd3b208b31 100644
--- a/src/cli/download_tracker.rs
+++ b/src/cli/download_tracker.rs
@@ -181,7 +181,7 @@ impl DownloadTracker {
                         let percent = (self.total_downloaded as f64 / content_len as f64) * 100.;
                         let remaining = content_len - self.total_downloaded;
                         let eta_h = Duration::from_secs(if speed == 0 {
-                            std::u64::MAX
+                            u64::MAX
                         } else {
                             (remaining / speed) as u64
                         });
diff --git a/src/cli/rustup_mode.rs b/src/cli/rustup_mode.rs
index 3a7b4573627..2b7ee8fe31a 100644
--- a/src/cli/rustup_mode.rs
+++ b/src/cli/rustup_mode.rs
@@ -1176,7 +1176,7 @@ fn show(cfg: &Cfg, m: &ArgMatches) -> Result<utils::ExitCode> {
                 )?;
                 writeln!(t.lock(), "name: {}", active_toolchain.name())?;
                 writeln!(t.lock(), "compiler: {}", active_toolchain.rustc_version())?;
-                writeln!(t.lock(), "active because: {}", active_reason.to_string())?;
+                writeln!(t.lock(), "active because: {}", active_reason)?;
 
                 // show installed targets for the active toolchain
                 writeln!(t.lock(), "installed targets:")?;
@@ -1214,7 +1214,7 @@ fn show_active_toolchain(cfg: &Cfg, m: &ArgMatches) -> Result<utils::ExitCode> {
     let cwd = utils::current_dir()?;
     match cfg.find_active_toolchain(&cwd)? {
         Some((toolchain_name, reason)) => {
-            let toolchain = new_toolchain_with_reason(cfg, toolchain_name.clone().into(), &reason)?;
+            let toolchain = new_toolchain_with_reason(cfg, toolchain_name.clone(), &reason)?;
             writeln!(
                 process().stdout().lock(),
                 "{}\nactive because: {}",
diff --git a/tests/suite/cli_rustup.rs b/tests/suite/cli_rustup.rs
index 833ee1544f9..89d4f85a9fb 100644
--- a/tests/suite/cli_rustup.rs
+++ b/tests/suite/cli_rustup.rs
@@ -2158,7 +2158,7 @@ fn override_order() {
             // env > dir override > file > default
             let out = config.run(
                 "rustup",
-                &["show", "active-toolchain"],
+                ["show", "active-toolchain"],
                 &[("RUSTUP_TOOLCHAIN", env_tc)],
             );
             assert!(out.ok);
@@ -2167,7 +2167,7 @@ fn override_order() {
             // +toolchain > env > dir override > file > default
             let out = config.run(
                 "rustup",
-                &[&format!("+{}", command_tc), "show", "active-toolchain"],
+                [&format!("+{}", command_tc), "show", "active-toolchain"],
                 &[("RUSTUP_TOOLCHAIN", env_tc)],
             );
             assert!(out.ok);